278045271 has 32 divisors (see below), whose sum is σ = 471667200. Its totient is φ = 158578560.

The previous prime is 278045249. The next prime is 278045281. The reversal of 278045271 is 172540872.

It is not a de Polignac number, because 278045271 - 2⁷ = 278045143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278045281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129535 + ... + 131663.

It is an arithmetic number, because the mean of its divisors is an integer number (14739600).

Almost surely, 2^278045271 is an apocalyptic number.

278045271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

278045271 is a deficient number, since it is larger than the sum of its proper divisors (193621929).

278045271 is a wasteful number, since it uses less digits than its factorization.

278045271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 278045271 is about 16674.6895323421. The cubic root of 278045271 is about 652.6873131142.

The spelling of 278045271 in words is "two hundred seventy-eight million, forty-five thousand, two hundred seventy-one".